Horsfieldia obtusa W.j.de Wilde

Species

Angiosperms > Magnoliales > Myristicaceae > Horsfieldia

Characteristics

Tree, height not recorded. Twigs terete or faintly angular, 2.5-4(-6) mm diameter, grey-brown, rather late glabrescent, hairs dark rusty, 0.2-0.4 mm long; bark coarsely striate, finely longitudinally cracking; lenticels small and inconspicuous. Leaves thinly coriaceous, oblong, 8-10 by 3-3.5 cm, base attenuate, apex rounded; upper surface glabrous (except midrib), dark olivaceous on drying, lower surface early glabrescent, purplish brown on drying, with pale yellowish enlarged hair scars, but dots absent; midrib moderately raised, late glabrescent above; nerves c. 10 pairs, ± flat above, lines of interarching regular, clearly visible; venation lax, hardly visible; petiole 10 by 2 mm, late glabrescent; leaf bud 12 by 3 mm, with dense dark rusty hairs 0.2-0.4 mm. Inflorescences behind the leaves, densely pubescent, hairs rusty, 0.2-0.4(-0.5) mm long; in male: about 3 times branched, many-flowered, 5-9 by 3-5 cm, peduncle 0.3-1 cm long, with flowers in clusters of 3-6; female not seen; bracts caducous; flowers glabrous, perianth 3-(or 4-)lobed, pedicel articulated. Male flowers: pedicel 1-1.5 mm long, slender; buds subglobose, 1.3-1.5 by 1.5-1.6 mm, cleft nearly 1/2, firm, not collapsing on drying, lobes at the apex 0.2 mm, at base 0.4 mm thick; androecium (including androphore) broadly obovoid, 0.8 by 1 mm, in cross section 3-(or 4-)quetrous (Plate 3: 67); thecae 18 or 20, suberect, 0.5 mm long, free in the upper half, acutish; androphore ± tapering to base, 0.3 mm long; column hollowed to about the base of the anthers. Female flowers and fruits not known.
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Growth form tree
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Foliage retention evergreen
Sexuality dioecy
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Cultivation

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Distribution

Horsfieldia obtusa world distribution map, present in Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:930746-1
WFO ID wfo-0000724900
COL ID 3MQC6
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Horsfieldia obtusa